package setup: set version back to 0.0.1 and attempt to tag

as a release.

following:
https://python-packaging.readthedocs.io/en/latest/dependencies.html
for pip.

For issue #18: Package code so it can be installed with pip

Note yet tested!

setup.py

 from setuptools import setup
 
 setup(name='pdbeccdutils',
-      version='0.0.4',
+      version='0.0.1',
       description='Tools to deal with wwPDB chemical components definitions for small molecules',
       url='https://gitlab.com/pdbe/ccd_utils',
       author='Protein Data Bank in Europe',